{"id":"EM-20261111-RVRO","url":"https://cyber.eventmonitor.net/incident/EM-20261111-RVRO/busybox-vulnerability-cve-2026-124737/","type":"cve","title":"BusyBox Vulnerability (CVE-2026-124737)","subtitle":"CVE-2026-124737","subject":"CVE-2026-124737","status":"Developing","severity":"high","affected":[],"headline":null,"born":"2026-11-11T10:16:43.620Z","firstSignal":"2026-11-11T09:15:15.000Z","lastSignal":"2026-11-11T10:16:43.620Z","updated":"2026-11-11T12:38:43.721Z","revision":1,"life":[{"status":"Born","at":"2026-11-11T10:16:43.620Z","why":"second independent source: C6 NVD CVE API 2.0"},{"status":"Developing","at":"2026-11-11T10:16:43.620Z","why":"signals keep joining"}],"changeLog":[{"at":"2026-11-11T09:15:15.000Z","what":"First signal: C41 Red Hat Security Data"},{"at":"2026-11-11T10:16:43.620Z","what":"Born: second source, C6 NVD CVE API 2.0. Page EM-20261111-RVRO created."}],"stages":[{"name":"Disclosed","at":"2026-11-11T10:16:43.620Z","detail":"C6 NVD published"},{"name":"Scored","at":"2026-11-11T10:16:43.620Z","detail":"CVSS 7.5"},{"name":"Exploited","at":null,"detail":"No exploitation reported"},{"name":"Advisories","at":null,"detail":"None yet"},{"name":"Vendor Response","at":"2026-11-11T09:15:15.000Z","detail":"C41 published"},{"name":"Resolved","at":null,"detail":"After 14 quiet days"}],"signals":[{"at":"2026-11-11T09:15:15.000Z","source":"C41","sourceName":"Red Hat Security Data","role":"Vendor","severity":3,"title":"Red Hat: CVE-2026-124737 (important)","text":"busybox: Heap buffer overflow in the tftp client on fallback to the default block size","url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-124737.json"},{"at":"2026-11-11T10:16:43.620Z","source":"C6","sourceName":"NVD CVE API 2.0","role":"Database","severity":3,"title":"CVE-2026-124737 (CVSS 7.5)","text":"A flaw was found in BusyBox. When the TFTP (Trivial File Transfer Protocol) client requests a custom small block size and receives a standard response, it falls back to the default block size without resizing the allocated memory buffer. A malicious TFTP server can exploit this issue by sending standard-sized network packets during a transfer, causing a heap buffer overflow. This flaw allows an attacker to achieve arbitrary code execution or cause a Denial of Service (DoS) by crashing the application.","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-124737"}],"crowd":[],"reference":{"nvd":{"published":"2026-11-11T10:16:43.620","score":7.5,"severity":"HIGH","desc":"A flaw was found in BusyBox. When the TFTP (Trivial File Transfer Protocol) client requests a custom small block size and receives a standard response, it falls back to the default block size without resizing the allocated memory buffer. A malicious TFTP server can exploit this issue by sending…","product":"","seen":1794400723721},"kev":null,"epss":null,"p0":false},"mergedInto":null,"publisher":"Event Monitor Cyber"}